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Johnnie W. Prothro, Christine A. Rosenbloom, Physical Measurements in an Elderly Black Population: Knee Height as the Dominant Indicator of Stature, Journal of Gerontology, Volume 48, Issue 1, January 1993, Pages M15–M18, https://doi.org/10.1093/geronj/48.1.M15
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Abstract
This investigation examined (a) select physical measurements for age and gender differences in an elderly Black population, and(b) the relationship of stature as a dependent variable on knee height, weight, age, and gender in this population. T-test values were greater for men than for women in stature and knee height (p ≤ .001), whereas gender differences in weight were not significant. Multiple regression was used to determine the relationship of stature to the four independent variables. When all Black subjects (n = 119) were included, three variables were significant: 3√knee height, gender, and weight 3√weight (R2 = .49). The equation inclusive only of the 98 Black females contained two variables: knee height2 and 3√weight (R2 = .29). The probability of both R2's was ≤ .001. In decreasing order, knee height, gender, and weight were important in predicting stature; age was not significant.